In order to present, discuss and visit successful models of urban sustainability, the Biosphere Global Institute promotes every two years, alternately in Portugal and Spain, the achievement of Binational Seminar on Urban Sustainability. We have made ten editions in partnership with Portuguese cities and four editions in Spanish cities. For each seminar is prepared a program covering conferences, round tables and technical visits, focusing on the areas of environment, urban planning, housing, transport, social welfare, education, health and sustainable tourism. The target audiences of the seminar are mainly mayors, vice mayors, municipal secretaries, parliamentarians and Brazilian companies interested in knowing the progress made in public administration at European cities. The aim is to promote the application of good practices in Brazilian municipalities.